2857520378 has 8 divisors (see below), whose sum is σ = 4538414772. Its totient is φ = 1344715456.

The previous prime is 2857520359. The next prime is 2857520389. The reversal of 2857520378 is 8730257582.

It is a happy number.

2857520378 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 2234169289 + 623351089 = 47267^2 + 24967^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 42022325 + ... + 42022392.

Almost surely, 2^2857520378 is an apocalyptic number.

2857520378 is a deficient number, since it is larger than the sum of its proper divisors (1680894394).

2857520378 is a wasteful number, since it uses less digits than its factorization.

2857520378 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 84044736.

The product of its (nonzero) digits is 940800, while the sum is 47.

The square root of 2857520378 is about 53455.7796500996. The cubic root of 2857520378 is about 1419.0459070652.

The spelling of 2857520378 in words is "two billion, eight hundred fifty-seven million, five hundred twenty thousand, three hundred seventy-eight".